锘??xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>&#22269;&#20869;&#22269;&#20135;&#31934;&#21697;&#20037;&#20037;&#44;&#21320;&#22812;&#99;&#114;&#22312;&#32447;&#35266;&#30475;&#39640;&#28165;&#22312;&#32447;&#35270;&#39057;&#23436;&#25972;&#29256;&#44;&#20037;&#20037;&#20013;&#25991;&#23383;&#24149;&#97;&#118;&#19968;&#21306;&#20108;&#21306;&#19981;&#21345;</title><link>http://www.aygfsteel.com/proglion/archive/2006/04/27/43479.html</link><dc:creator>姣斿皵寰?/dc:creator><author>姣斿皵寰?/author><pubDate>Thu, 27 Apr 2006 01:59:00 GMT</pubDate><guid>http://www.aygfsteel.com/proglion/archive/2006/04/27/43479.html</guid><description><![CDATA[
		<p>
				<font color="#000000">褰撻渶瑕佷粠涓嶆涓�涓〃涓煡璇㈡墍闇�瑕佺殑鏁版嵁鏃訛紝灝辮鐢ㄥ埌join銆?br /><br />鏈�甯哥敤鐨刯oin鏂瑰紡鏄痠nner join錛屽叾璇硶瑙勫垯濡備笅錛?br />聽聽聽聽 select 瀛楁鍚?from 涓昏璧勬枡琛?inner join 嬈¤璧勬枡琛?on &lt;join瑙勫垯&gt;<br />浠orthwind鏁版嵁搴撲負渚嬶紝鍦≦A涓緭鍏ュ涓嬭剼鏈細<br />聽聽聽聽聽select ProductId, ProductName, Suppliers.CompanyName from Products<br />聽聽聽聽聽聽聽聽聽聽聽聽 聽inner join Suppliers on Products.SupplierId = Suppliers.SupplierID<br />娉ㄦ剰錛宨nner join鐨勪富瑕佺簿紲炲氨鏄爀xclusive聽,聽鍙畠鍋氭帓浠栨�у惂!聽灝辨槸璁猜燡oin聽瑙勫垯涓嶇浉絎︾殑璧勬枡灝變細琚帓闄ゆ帀,聽璀璁插湪聽Product聽涓湁涓�欏逛駭鍝佺殑渚涜揣鍟嗕唬鐮伮?SupplierId),聽娌℃湁鍑虹幇鍦燬uppliers聽璧勬枡琛ㄤ腑,聽閭ｄ箞榪欑瑪璁板綍渚夸細琚帓闄ゆ帀聽銆?br /><br />Outer聽Join聽 <br />榪欐鐨劼燡oin聽鏂瑰紡鏄竴鑸漢姣旇緝灝戠敤鍒扮殑,聽鐢氳嚦鏈変簺聽SQL聽鐨勭鐞嗚�呬篃浠庢湭鐢ㄨ繃,聽榪欑湡鏄竴浠舵偛鍝�鐨勪唬蹇?聽鍥犱負鍠勭敤聽Outer聽Join聽鏄彲浠ョ畝鍖栦竴浜涙煡璇㈢殑宸ヤ綔鐨?聽鍏堟潵鐪嬬湅聽Outer聽Join聽鐨勮娉暵?<br />Select聽&lt;瑕佹煡璇㈢殑瀛楁&gt;聽From聽&lt;Left聽璧勬枡琛?gt;聽 <br />&lt;Left聽|聽Right&gt;聽[Outer]聽Join聽&lt;Right聽璧勬枡琛?gt;聽On聽&lt;Join聽瑙勫垯&gt;聽 <br />璇硶涓殑聽Outer聽鏄彲浠ョ渷鐣ョ殑,聽渚嬪浣犲彲浠ョ敤聽Left聽Join聽鎴栨槸聽Right聽Join,聽鍦ㄦ湰璐ㄤ笂,聽Outer聽Join聽鏄爄nclusive,聽鍙畠鍋氬寘瀹規�у惂!聽涓嶅悓浜幝營nner聽Join聽鐨勬帓浠栨�?聽鍥犳鍦燣eft聽Outer聽Join聽鐨勬煡璇㈢粨鏋滀細鍖呭惈鎵�鏈壜燣eft聽璧勬枡琛ㄧ殑璧勬枡,聽棰犲�掕繃鏉ヨ,聽Right聽Outer聽Join聽鐨勬煡璇㈠氨浼氬寘鍚墍鏈壜燫ight聽璧勬枡琛ㄧ殑璧勬枡,聽鎺ヤ笅鏉ユ垜浠繕鏄潵鍋氫簺瀹為檯鎿嶄綔,聽浠嶇劧鏄嬌鐢ㄥ寳椋庢暟鎹簱,聽浣嗚鍏堝仛涓�浜涘皬灝忕殑淇敼,聽鎵嶈兘杈懼埌鎴戜滑瑕佺殑緇撴灉聽 <br />棣栧厛瑕佹嬁鎺壜燩roducts聽璧勬枡琛ㄧ殑聽Foreign聽Key,聽鍚﹀垯娌℃湁娉曞害鍦燩roducts聽璧勬枡琛ㄦ柊澧炰竴絎斅燬upplierId聽娌℃湁瀵規槧鍒奧燬uppliers聽璧勬枡琛ㄧ殑綰綍,聽瑕佺煡褰變竴涓祫鏂欒〃鐨劼燙onstraint聽浣犲彲浠ユ墽琛屄燬QL聽鍐呭緩鐨劼爏p_helpconstraint聽,聽鍦燪A聽鎵ц聽 <br />sp_helpconstraint聽Products聽 <br />鎺ヤ笅鏉ュ垹闄ぢ燜K_Products_Suppliers聽榪欎釜聽Foreign聽Key聽 <br />Alter聽Table聽Products聽 <br />Drop聽Constraint聽FK_Products_Suppliers聽 <br />鍐嶆潵鏂板涓�絎旂邯褰曚簬聽Products聽璧勬枡琛?聽SupplierId聽浣跨敤聽50聽鏄洜涓哄畠騫舵病鏈夊鏄犲埌聽Suppliers聽璧勬枡琛ㄤ腑鐨勮褰暵?<br />Insert聽Into聽Products聽(ProductName,SupplierId,CategoryId)聽 <br />values聽('Test聽Product','50','1')聽 <br />鐜板湪鎴戜滑鍐嶆墽琛屽ご鍓嶇殑鏌ヨ,聽鍙槸灝喡營nner聽Join聽鏀逛負聽Left聽Outer聽Join聽 <br />Select聽ProductId,聽ProductName,聽Suppliers.SupplierId聽 <br />From聽Products聽 <br />Left聽Outer聽Join聽Suppliers聽 <br />Products.Suppliers聽=聽Suppliers.SupplierId聽 <br />姣旇緝涓�涓嬩袱縐嵚燡oin聽鏂瑰紡鐨勬煡璇㈢粨鏋?聽浣犲簲璇ュ氨浼氱煡褰卞叾涓殑宸埆!聽 <br />鍐嶆潵鐪嬬湅聽Right聽Outer聽Join,聽璇鋒柊澧炰笅搴曡繖絎旇褰暵?<br />Insert聽Into聽Suppliers聽(CompanyName)聽 <br />values聽('LearnASP')聽 <br />鐜板湪璇蜂嬌鐢燫ight聽Out聽Join聽鏉ヤ綔鏌ヨ,聽姣旇緝鐪嬬湅鏌ヨ鐨勭粨鏋滃拰聽Inner聽Join聽鏈変粈涔堜笉鍚?聽 <br />瀵繪壘涓嶇浉絎︾邯褰暵?<br />榪欓噷鎴戜滑鏉ョ湅鐪嬪浣曚嬌鐢燨ut聽Join聽鏉ユ壘涓嶇浉絎︾邯褰?聽鍙兘鏄湁瀛愮邯褰曞嵈娌℃湁鐖剁邯褰曟垨鏄鍊掕繃鏉ヂ?<br />Select聽Suppliers.CompanyName聽From聽Products聽 <br />Right聽Join聽Suppliers聽 <br />On聽Products.SupplierId聽=聽Suppliers.SupplierId聽 <br />Where聽Products.SupplierId聽is聽Null聽 <br />鎵ц緇撴灉浣犱細鎵懼埌涓�絎旇祫鏂欎負聽LearnASP,聽璇ョ瑪渚涜揣鍟嗚祫鏂欏瓨鍦?聽浣嗗熀鏈笂宸茬粡娌℃湁浜у搧鏄潵鑷繖涓緵璐у晢,聽鎯寵薄涓�涓嬪鏋滀笉鐢燨uter聽Join聽浣犺鎬庝箞浠ヤ竴涓燬QL聽鎸囦護瀹屾垚鍚屼竴鏌ヨ緇撴灉!聽鐭ラ亾聽Outer聽Join聽鐨勫ソ鐢ㄤ簡鍚?聽鍐嶆墽琛屄?<br />Select聽Products.ProductName聽 <br />From聽Products聽 <br />Left聽Join聽Suppliers聽 <br />On聽Products.SupplierId聽=聽Suppliers.SupplierId聽 <br />Where聽Suppliers.SupplierId聽is聽Null聽 <br />榪欎釜鏌ヨ緇撴灉浣犱細鍙戠幇聽Test聽Product聽榪欓」浜у搧绔熺劧鎵句笉鍒頒緵璐у晢鐨勮祫鏂?聽 <br /></font>
		</p>
<img src ="http://www.aygfsteel.com/proglion/aggbug/43479.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/proglion/" target="_blank">姣斿皵寰?/a> 2006-04-27 09:59 <a href="http://www.aygfsteel.com/proglion/archive/2006/04/27/43479.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item></channel></rss>                              <footer>
<div class="friendship-link">
<a href="http://www.aygfsteel.com/" title="&#29408;&#29408;&#20037;&#20037;&#20122;&#27954;&#27431;&#32654;&#19987;&#21306;&#95;&#20013;&#25991;&#23383;&#24149;&#20122;&#27954;&#32508;&#21512;&#20037;&#20037;&#50;&#48;&#50;&#95;&#22269;&#20135;&#31934;&#21697;&#20122;&#27954;&#31532;&#20116;&#21306;&#22312;&#32447;&#95;&#26085;&#26412;&#20813;&#36153;&#32593;&#31449;&#35270;&#39057;">&#29408;&#29408;&#20037;&#20037;&#20122;&#27954;&#27431;&#32654;&#19987;&#21306;&#95;&#20013;&#25991;&#23383;&#24149;&#20122;&#27954;&#32508;&#21512;&#20037;&#20037;&#50;&#48;&#50;&#95;&#22269;&#20135;&#31934;&#21697;&#20122;&#27954;&#31532;&#20116;&#21306;&#22312;&#32447;&#95;&#26085;&#26412;&#20813;&#36153;&#32593;&#31449;&#35270;&#39057;</a>

</div>

</footer>


主站蜘蛛池模板：
<a href="http://" target="_blank">梁平县</a>|
<a href="http://" target="_blank">秦安县</a>|
<a href="http://" target="_blank">山阴县</a>|
<a href="http://" target="_blank">遵义县</a>|
<a href="http://" target="_blank">景洪市</a>|
<a href="http://" target="_blank">同心县</a>|
<a href="http://" target="_blank">台中市</a>|
<a href="http://" target="_blank">麻栗坡县</a>|
<a href="http://" target="_blank">赣榆县</a>|
<a href="http://" target="_blank">玛多县</a>|
<a href="http://" target="_blank">家居</a>|
<a href="http://" target="_blank">金湖县</a>|
<a href="http://" target="_blank">昌黎县</a>|
<a href="http://" target="_blank">长垣县</a>|
<a href="http://" target="_blank">道孚县</a>|
<a href="http://" target="_blank">乌苏市</a>|
<a href="http://" target="_blank">永胜县</a>|
<a href="http://" target="_blank">安岳县</a>|
<a href="http://" target="_blank">伊宁县</a>|
<a href="http://" target="_blank">清镇市</a>|
<a href="http://" target="_blank">即墨市</a>|
<a href="http://" target="_blank">大关县</a>|
<a href="http://" target="_blank">安溪县</a>|
<a href="http://" target="_blank">穆棱市</a>|
<a href="http://" target="_blank">永平县</a>|
<a href="http://" target="_blank">兰西县</a>|
<a href="http://" target="_blank">南溪县</a>|
<a href="http://" target="_blank">庆元县</a>|
<a href="http://" target="_blank">顺义区</a>|
<a href="http://" target="_blank">武穴市</a>|
<a href="http://" target="_blank">乐清市</a>|
<a href="http://" target="_blank">潼南县</a>|
<a href="http://" target="_blank">伊金霍洛旗</a>|
<a href="http://" target="_blank">兴业县</a>|
<a href="http://" target="_blank">丰镇市</a>|
<a href="http://" target="_blank">东阳市</a>|
<a href="http://" target="_blank">临夏县</a>|
<a href="http://" target="_blank">开阳县</a>|
<a href="http://" target="_blank">孟津县</a>|
<a href="http://" target="_blank">康马县</a>|
<a href="http://" target="_blank">麻江县</a>|
<script>
(function(){
    var bp = document.createElement('script');
    var curProtocol = window.location.protocol.split(':')[0];
    if (curProtocol === 'https') {
        bp.src = 'https://zz.bdstatic.com/linksubmit/push.js';
    }
    else {
        bp.src = 'http://push.zhanzhang.baidu.com/push.js';
    }
    var s = document.getElementsByTagName("script")[0];
    s.parentNode.insertBefore(bp, s);
})();
</script>
</body>